#include <iostream>
#include <fstream>
#include <cstring>

#define NMAX 2000001

using namespace std;

/**

                                          `-.`'.-'
                                       `-.        .-'.
                                    `-.    -./\.-    .-'
                                        -.  /_|\  .-
                                    `-.   `/____\'   .-'.
                                 `-.    -./.-""-.\.-      '
                                    `-.  /< (()) >\  .-'
                                  -   .`/__`-..-'__\'   .-
                                ,...`-./___|____|___\.-'.,.
                                   ,-'   ,` . . ',   `-,
                                ,-'   ________________  `-,
                                   ,'/____|_____|_____\
                                  / /__|_____|_____|___\
                                 / /|_____|_____|_____|_\
                                ' /____|_____|_____|_____\
                              .' /__|_____|_____|_____|___\
                             ,' /|_____|_____|_____|_____|_\
,,---''--...___...--'''--.. /../____|_____|_____|_____|_____\ ..--```--...___...--``---,,
                           '../__|_____|_____|_____|_____|___\
      \    )              '.:/|_____|_____|_____|_____|_____|_\               (    /
      )\  / )           ,':./____|_____|_____|_____|_____|_____\             ( \  /(
     / / ( (           /:../__|_____|_____|_____|_____|_____|___\             ) ) \ \
    | |   \ \         /.../|_____|_____|_____|_____|_____|_____|_\           / /   | |
 .-.\ \    \ \       '..:/____|_____|_____|_____|_____|_____|_____\         / /    / /.-.
(=  )\ `._.' |       \:./ _  _ ___  ____  ____ _    _ _ _ _ _  _ __\        | `._.' /(  =)
 \ (_)       )        \/                                            \       (       (_) /
  \    `----'          """"""""""""""""""""""""""""""""""""""""""""""        `----'    /
   \   ____\__                                                              __/____   /
    \ (=\     \                                                            /     /-) /
     \_)_\     \                                                         /     /_(_/
          \     \                                                        /     /
           )     )  _                                                _  (     (
          (     (,-' `-..__                                    __..-' `-,)     )
           \_.-''          ``-..____                  ____..-''          ``-._/
            `-._                    ``--...____...--''                    _.-'
                `-.._                                                _..-'
                     `-..__       FORTIS FORTUNA ADIUVAT       __..-'
                           ``-..____                  ____..-''
                                    ``--...____...--''

*/

class parser{
    public:
        parser() {}
        parser(const char *file_name){
            input_file.open(file_name,ios::in | ios::binary);
            input_file.sync_with_stdio(false);
            index=0;
            input_file.read(buffer,SIZE);}
        inline parser &operator >>(char n[]){
            for (;buffer[index]<'0' or buffer[index]>'z';inc());
            int it=0;
            for (;'0'<=buffer[index] and buffer[index]<='z';inc())
                n[it++]=buffer[index];
            n[it]='\0';
            return *this;}
        ~parser(){
            input_file.close();}
    private:
        fstream input_file;
        static const int SIZE=0x400000;
        char buffer[SIZE];
        int index=0;
        inline void inc(){
            if(++index==SIZE)
                index=0,input_file.read(buffer,SIZE);}
};

class writer{
    public:
        writer() {};
        writer(const char *file_name){
            output_file.open(file_name,ios::out | ios::binary);
            output_file.sync_with_stdio(false);
            index&=0;}
        inline writer &operator <<(int target){
            aux&=0;
            n=target;
            if (!n)
                nr[aux++]='0';
            for (;n;n/=10)
                nr[aux++]=n%10+'0';
            for(;aux;inc())
                buffer[index]=nr[--aux];
            return *this;}
        inline writer &operator <<(const char *target){
            aux&=0;
            while (target[aux])
                buffer[index]=target[aux++],inc();
            return *this;}
        ~writer(){
            output_file.write(buffer,index);output_file.close();}
    private:
        fstream output_file;
        static const int SIZE=0x200000; ///2MB
        int index,aux,n;
        char buffer[SIZE],nr[24];
        inline void inc(){
            if(++index==SIZE)
                index&=0,output_file.write(buffer,SIZE);}
};

int pos[1000],dimA,dimB,nr,table[NMAX];
char a[NMAX],b[NMAX];

parser f("strmatch.in");
writer t("strmatch.out");

void build_table(){
    int wPos=2,cnd=0;
    table[0]=-1,table[1]=0;
    while (wPos<dimA)
        if (a[wPos-1]==a[cnd])
            ++cnd,
            table[wPos]=cnd,
            ++wPos;
        else
            if (cnd>0)
                cnd=table[cnd];
            else
                table[wPos]=0,
                ++wPos;
}

void kmp(){
    int matchPos=0,wordPos=0;
    while (matchPos+wordPos<dimB){
        bool backtrack=true;
        if (a[wordPos]==b[matchPos+wordPos]){
            backtrack=false;
            if (wordPos==dimA-1){
                ++nr;
                if (nr<=1000)
                    pos[nr-1]=matchPos;
                backtrack=true;
            }
            else
                ++wordPos;
        }
        if (backtrack)
            if (table[wordPos]>-1)
                matchPos+=wordPos-table[wordPos],
                wordPos=table[wordPos];
            else
                wordPos=0,
                ++matchPos;
    }
}

int main()
{
    f>>a>>b;
    dimA=strlen(a);
    dimB=strlen(b);
    if (dimA==dimB){
        if (a==b)
            t<<1<<"\n"<<0;
        else
            t<<0;
        return 0;
    }
    build_table();
    kmp();
    t<<nr<<"\n";
    for (int i=0;i<(nr<1000?nr:1000);++i)
        t<<pos[i]<<" ";
    return 0;
}